Denominators of coefficients in the formal power series a(x) such that a(a(x)) = exp(x) - 1.

A052105

Denominators of coefficients in the formal power series a(x) such that a(a(x)) = exp(x) - 1.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =48a(4) =1a(5) =3840a(6) =92160a(7) =645120a(8) =3440640a(9) =30965760a(10) =14863564800a(11) =24222105600

External references